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1.
WILLIAMS R.A. SELOMULYA C. JIA X. 《浙江大学学报(A卷英文版)》2005,6(12):1367-1373
INTRODUCTION Separation of solids from suspending liquid plays a crucial role in a variety of processes, from nanomaterials synthesis to bio-processing. It often involves colloidal particles that need to be aggregated into more manageable sizes. Characteristics of these aggregates influence downstream solids recovery. For instance, aggregates with open configurations may settle slower than those with denser structures due to increasing fluid drag, although considerable flow- through could… 相似文献
2.
《铜仁师专学报》2001,3(1):29-33,66
Teh Purpose of the teaching and the learning of English is to develop communicative competence.Pragmatics is one of the most essential parts of the communicative competence .It concerns the appropriate use of language.This paper aims to show the significant role of pragmatics in the teaching and learning of English and further explores the importance of cultivating students‘awareness to improve their pragmatic ability and communicative competence。 相似文献
3.
The purposeof the teaching and the learning of English is to develop communicative competence. Pragmatics is one of the most essential parts of the communicative competence .It concerns the appropriate use of language. This paper aims to show the significant role of pragmatics in the teaching and learning of English and further explores the importance of cultivating students' awareness to improve their pragmatic ability and communicative competence. 相似文献
4.
苏秋芳 《福建教育学院学报》2001,2(4):42-44
In poetry, the device of ending two or more lines with words that sound alike is called end
rhyming;end words that share a particular sound are end rhymes. When used in a poem,end rhymes set
up a definite pattern of sounds-a rhyme scheme. 相似文献
5.
The e-book has many advantages over a paperbased product. You can store lots of books on one computer—in fact your entire library could be stored on the top of your desk. E-books also allow you to mark your page with an electronic bookmark and jump straight to it when you open the book. 相似文献
6.
INTRODUCTIONAsasinkandaninnersourceofnutrients,sedimentsplayanimportantroleinlakeeutroph ication.TheeutrophicationstatusofWestLakeisstillcriticalinrecentyearsevenaftermostpollutionsourcesaroundWestLakehavebeencontrolled(Peietal.,1998) ,mainlythroughtherel… 相似文献
7.
Ulrich Teichler 《Higher Education》2008,56(3):349-379
Debates and policies in Europe as regards the diversity of higher education institutions and programmes have changed substantially
over the years. When expansion of the rate of new entry students was expected to grow beyond 10%, diversification between
types of higher education institutions became the most popular option, whereas no consensus emerged as far as the extent of
diversity and the most desirable classifications are concerned. In the 1980s, attention shifted gradually towards “vertical”
differences among institutions of formally the same type. Since the 1990s, more extreme modes of vertical diversity were more
frequently advocated as options to embark into world-wide competition for “world-class university”. The concurrent popular
debates are criticized as blaming moderate vertical inter-institutional diversity, emphasis on intra-institutional diversity,
efforts to put prime emphasis on a variety of profiles of any model other than extreme vertical diversity as counteracting
“quality”, although evidence for the superiority of the model praised is feeble. 相似文献
8.
The e-book has many advantages over a paper-based product. You .can store lots of books on one computer-in fact your entire library could be stored on the top of your desk. E-books also allow you to mark your page with an electronic bookmark and jump straight to it when you open the book. 相似文献
9.
If A and B are two sets, A is said to be a subset of B if and only if every element of A is also an element of B. The subset relation is indicated by the symbolism 相似文献
10.
INTRODUCTION The CUBE BY operator (Gray et al., 1996) is anessential facility for data warehousing and OLAP. Itis a multidimensional extension of the standardGROUP BY operator, computing all possible com-binations of the grouping attributes in the CUBE BYclause. A CUBE BY with N grouping attributes willcompute 2N group-bys. In the real world, a fact tableis often very large and sparse. In such cases, the sizeof a group-by is possibly close to the size of the facttable. So th… 相似文献
11.
Engin 《扬州职业大学学报》2005,(2)
e essence of sound, this paper discusses where the noises of the punch pressing machines mainly come from and their transmission methods. Furthermore, it discusses how to effectively control these noises.noise; punch pressing machine; impact; control0鄂州大学学报J 相似文献
12.
Listen,can you hear it?That sound of dial-upmodems echoing across the country...it's the sirencall of the World Wide Web,beckoning to millionsto enter the brave new worlds of e-commerce,e-news,e-trading,e-mail,e-everything.Including e-crime.As computer prices have dropped,computerownership has soared,and with it,computer 相似文献
13.
Danièle Cros Maurice Maurin Roger Amouroux Maurice Chastrette∗ Jacques Leber Michel Fayol 《International Journal of Science Education》2013,35(3):305-313
Preconceptions of first‐year university students of the constituents of matter and the notions of acids and bases were investigated on a total of 400 students. The procedure used consisted of free interviews, semi‐structured interviews and questionnaires. It was found that the constituents of matter were well known to students, but that interactions between these constituents were either totally unknown or were the subject of severe misconceptions. The students’ knowledge tended to be qualitative and formal, with a worrying lack of connection with everyday life. 相似文献
14.
If A and B are two sets,A is said to be a subsetof B if and only if every element of A is also anelement of B.The subset relation is indicated by thesymbolismAB(or BA)which is read“A is a subset of B”or“A is includedin B”or“B includes A”.It is clear from the definition that every set A isa subset of itself.It is important to know that theempty setis the subset of any set A:A.(Wewill explain it in the logic part)Two sets A and B are said to be equal if and 相似文献
15.
《中山大学学报论丛》1995,(3)
WemadeasurveyofmammalianinGuangdongandHainanfrom1958,Theresults:3monographesand52paperswerepuplished.1Thesurveyofmammalianresources(1)ThesurveyofmammalianresourcesinHainanIsland.ThecontinuoussurveyofmammalianresourcesinHainanIslandwasmadefromMay,1960toDecember,1964.Theinvestigationswerecarriedoutandmorethan30surveysitesweresetupthere.755specimenofmammalianwerecollectedinthefield,whichrepresentedeightorder,24familiesand68species,ofwhichfivewerenewrecordsfromtheisland.ExcepttheDouelangur(Py… 相似文献
16.
Alfred Oftedal Telhaug Odd Asbjørn Mediås Petter Aasen 《Scandinavian Journal of Educational Research》2013,57(2):141-158
The theme of this article is education as nation building in the Scandinavian countries: Denmark, Norway and Sweden. Starting with an overview of their Social Democrat parties' ascension of to near hegemony immediately following the Second World War, and these parties' impact on education, we go on to sketch the interplay between general political trends and educational policies up to the present day. We examine the goals of educational policies, the governance of the primary school system and the instruments of governance. Five levels of governance are taken into account: central government, regional and local government, schools and, finally, what happens in the classroom. Attention is given to trends that the Scandinavian countries shared in particular periods and to the divergence between them. We conclude that the main trend up to now is towards deregulation, decentralisation and individualisation. 相似文献
17.
Graham Tall 《International Journal of Science Education》2013,35(1):17-38
Summaries English. The major national curriculum development projects in the UK were produced between 1963 and 1973. Although funded by two differentnational organizations, there has been considerable co‐operation and overlap of project staff and ideas resulting in a continuousrefinement of the centre‐periphery model used. By the end of the 10‐year period the model's defects had become clear and the continuing national projects considered it essential to request additional funds for further dissemination and after‐care. Subsequent projects have mostly been based on a local curriculum development model involving practising teachers to a much greater extent both in the curriculum development process and in the preparation of materials. It has become apparent that there is no single measure on which a project can be called successful or on which it can be determined that a project has ‘taken root’. Projects can fulfil their proposers’ wildest hopes and yet achieve little uptake; or, they can take root in the sense of having a considerable impact on science education in general whilst being substantially used by only a minority of the target group of teachers. The thesis of this article is that whilst dissemination and after‐care are essential, they are not sufficient to ensure uptake. Of prime importance isthe general attitude to curriculum development; the relevance of theprojects materials and ideas to the problems teachers face in schools; the extent to which they offer teachers fulfilment without requiring a complete re‐evaluation of their perspective to education and the cost in terms of equipment, materials and manpower. 相似文献
18.
Zhiyun Liu 《美中教育评论》2005,2(3):58-63,41
This article, in the perspective of dialectics, makes a discussion of three relations between modern universities and the development of modern society, namely that between technicality and sociality, between service and criticism, and between temporal character and internationalism. 相似文献
19.
Christine Lotter Jonathan Singer Jenice Godley 《Journal of Science Teacher Education》2009,20(6):553-582
This study describes the influence of a secondary science methods program on secondary science preservice teachers’ views
and enactment of nature of science and inquiry-based instructional practices. Built into the structure of this program were
three cycles of practice teaching and reflection in which the preservice teachers focused on key pedagogical ideas in classroom
settings with middle and high school students. The nine secondary preservice teachers improved both their understanding and
enactment of inquiry and nature of science throughout the program period. This study provides evidence of the importance of
incorporating multiple low-stakes practicum experiences that are closely tied to methods course goals that are highly scaffolded
through both methods instructor and cooperating teacher support and tied to analytic self-reflection. 相似文献
20.
Xuefa Chen Xiangfeng Hu 《美中教育评论》2005,2(6):33-43
Being laid-off, unemployment and difficulty for university graduates to fred their jobs have become widely concerned social issues. To solve the problems we must expand employment by every possible means. People usually think the countermeasure of expanding employment is to vigorously develop individual and private economy, and labor-intensive industry, etc. Indeed, these measures can increase the vacancies to solve the temporary problems of great urgency; however they can only give a short relief, but can't grant a permanent cu-e. At a time when our national economy is turning from labor-intensive mode to the capital and technology-intensive one, the mankind will enter an era of knowledge-driven economy soon; the basic countermeasure of expanding employment should be to develop higher education. It is the mission of higher education to turn the human resources of hundreds of millions of low quality of our country into the high-quality manpower capital. And to finish this mission, we must reform personmel training mode. We need to change the training mode of job-hunting to that of job-creation. 相似文献